58a851f108
into the inferior's __pthread_last_event variable, not a word from an inferior address used in the parent. Pass the address of a null word to ps_pdwrite, not a null pointer.
87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/* Retrieve event.
|
|
Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
|
|
#include "thread_dbP.h"
|
|
|
|
|
|
td_err_e
|
|
td_ta_event_getmsg (const td_thragent_t *ta, td_event_msg_t *msg)
|
|
{
|
|
/* XXX I cannot think of another way but using a static variable. */
|
|
/* XXX Use at least __thread once it is possible. */
|
|
static td_thrhandle_t th;
|
|
|
|
LOG ("td_ta_event_getmsg");
|
|
|
|
/* Test whether the TA parameter is ok. */
|
|
if (! ta_ok (ta))
|
|
return TD_BADTA;
|
|
|
|
/* Get the pointer to the thread descriptor with the last event. */
|
|
psaddr_t addr;
|
|
if (ps_pdread (ta->ph, ta->pthread_last_event,
|
|
&addr, sizeof (struct pthread *)) != PS_OK)
|
|
return TD_ERR; /* XXX Other error value? */
|
|
|
|
if (addr == 0)
|
|
/* Nothing waiting. */
|
|
return TD_NOMSG;
|
|
|
|
/* Read the event structure from the target. */
|
|
td_eventbuf_t event;
|
|
if (ps_pdread (ta->ph, (char *) addr + offsetof (struct pthread, eventbuf),
|
|
&event, sizeof (td_eventbuf_t)) != PS_OK)
|
|
return TD_ERR; /* XXX Other error value? */
|
|
|
|
/* If the structure is on the list there better be an event recorded. */
|
|
assert (event.eventnum != TD_EVENT_NONE);
|
|
|
|
/* Generate the thread descriptor. */
|
|
th.th_ta_p = (td_thragent_t *) ta;
|
|
th.th_unique = addr;
|
|
|
|
/* Fill the user's data structure. */
|
|
msg->event = event.eventnum;
|
|
msg->th_p = &th;
|
|
msg->msg.data = (uintptr_t) event.eventdata;
|
|
|
|
/* Get the pointer to the next descriptor with an event. */
|
|
psaddr_t next;
|
|
if (ps_pdread (ta->ph, (char *) addr + offsetof (struct pthread, nextevent),
|
|
&next, sizeof (struct pthread *)) != PS_OK)
|
|
return TD_ERR; /* XXX Other error value? */
|
|
|
|
/* Store the pointer in the list head variable. */
|
|
if (ps_pdwrite (ta->ph, ta->pthread_last_event,
|
|
&next, sizeof (struct pthread *)) != PS_OK)
|
|
return TD_ERR; /* XXX Other error value? */
|
|
|
|
/* Clear the next pointer in the current descriptor. */
|
|
next = NULL;
|
|
if (ps_pdwrite (ta->ph, (char *) addr + offsetof (struct pthread, nextevent),
|
|
&next, sizeof (struct pthread *)) != PS_OK)
|
|
return TD_ERR; /* XXX Other error value? */
|
|
|
|
return TD_OK;
|
|
}
|